Improvement in locomotive-tenders



' A. STURROCK;

Locomotive.

No. 40,715. Patented Nov. 24, 1863.

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NTTED STATES PATENT OFFICE.

AROHIBALD STURBOCK, OF DONCASTER, OOUNY OF YORK, ENGLAND.

IMPROVEMENT IN LOCOMOTlVE-TENDERS.

Specification forming part of Letters Patent No. 40,715, dated November24, 1863.

To all whom it may concern:

Be it known that I, AROHIBALD STUR- ROCK, of Doncaster, in the county ofYork, England, engineer, have invented Improvements in LocomotiveEngines and Tenders; and I do hereby declare that the following is afull and exact description thereof, reference being had to theaccompanying drawing, and to the figures and letters marked thereon.

The main object of my invention is to utilize the adhesion derived fromthe weight of the tender as a power to propel the train in addition tothat of the engine proper, instead of the engine, as under presentcircumstances, having the deadwveight of the tender to draw.

My invention consists in fitting auxiliary cylinders and engines on orto the tender, in connecting them through ordinary con nectingrods inthe usual manner to the wheels of the tender, in coupling all the wheelsof the tender, and in taking steam for the tender-cylinders from theordinary boiler which supplies the engine proper.

My invention also consists in forming the Water-tank in the tender witha false bottom, and in leading the exhaust-steam from thetender-cylinders into the chamber between the two bottoms. This steamheats the water in the tank, and the steam which is condensed in thechamber runs into a pipe connected with the boiler feed-pumps, and isforced by the pumps into the boiler.

In the drawing, A is the pipe for conveying steam from the engine-boilerto the regulator for the tender. B is the regulator for supplying steamto the cylinders on the tender.

0 is the pipe for conveying steam from the regulator to the cylinders. Drepresents the cylinders; E, the exhaust-pipe from the cylinders forconveying steam into the heatingchamber F. G is the exhaust-pipe forconveyin g the uncondensed steam from the heating chamber into theatmosphere. H is the crank-axle, and I the outside cranks, coupled withrods in the ordinary manner.

Sometimes, instead of forming the tender with a false bottom, 1 causethe Waste steam to circulate through a coil or series of pipes carriedthrough the Water in the tender. The coil or series of pipes has anoutlet at the farther end thereof.

Having thus fully described my invention, I claiml. The employment ofand fitting auxiliary cylinders and engines on or to the tender, andconnecting them through ordinary connectingrods to the wheels of thetender, said tendercylinders receiving steam from the ordinary boilerwhich supplies the engine proper, substantially as described.

2. Forming the water-tank in the tender with a false bottom, and leadingthe exhauststeamfrom thetender-cylinders into the chamber between thetwo bottoms, substantially as set forth.

AROHD. STURROCK.

